If you do really need an amp, think you'd probably do a lot better with a higher quality pre-amp specifically designed for low noise. Here are a couple:

https://www.amazon.com/Winegard-Boost-Pro-Preamplifier-Integrated/dp/B00DQN3R9O

https://www.amazon.com/Antennas-Direct-ClearStream-Preamplifier-System/dp/B00SVV2O6S

I own the non-app version of the first one after my previous one burned out after 8+ years. Couldn't be happier.

PS - here is the equipment I have.

http://www.menards.com/main/storeitem.html?iid=1444424451059

http://www.menards.com/main/storeitem.html?iid=1531463380018

https://www.amazon.com/dp/B00SVV2O6S/ref=cm_sw_em_r_mt_dp_U_CLkQDbKKXVKRE

I have issues that I think are due to the mount I'm currently using. Once I install the tripod - I think it will be better.